A live wet-bulb check. Can snowmakers run where you are, and when?

How this works
We pull NOAA's hourly forecast for your location and calculate the wet-bulb temperature for each hour. Snowmakers rely on wet-bulb because it accounts for both cold and dry air, the two conditions that let water droplets freeze in flight. Below 28°F−2°C they can run; below 25°F−4°C the snow is good quality.

Can they make snow at Bolton Valley?

NO

Too warm to make snow at Bolton Valley, VT

Base: 50°F10°C air · 44% humidity

Too warm for snowmaking
Colder Snowmaking line 28°F−2°C Warmer

Next snowmaking window: Tue 5 AM – 10 AM.

Next 48 hours wet-bulb by hour; columns below the line are snowmaking hours
28°F−2°C 27°F−3°C Now Mon Tue

Use the left and right arrow keys to step through hours.

  • Ideal
  • Great
  • Marginal
  • Too warm
  • Night
Hourly table
HourAirHumidityWet-bulbSnowmaking
Sun 12 PM50°F10°C44%40.2°F4.6°CToo warm
Sun 1 PM53°F12°C39%41.8°F5.4°CToo warm
Sun 2 PM54°F12°C38%42.4°F5.8°CToo warm
Sun 3 PM54°F12°C38%42.4°F5.8°CToo warm
Sun 4 PM56°F13°C34%43.2°F6.2°CToo warm
Sun 5 PM54°F12°C38%42.4°F5.8°CToo warm
Sun 6 PM52°F11°C39%41.0°F5.0°CToo warm
Sun 7 PM49°F9°C46%39.7°F4.3°CToo warm
Sun 8 PM48°F9°C47%39.0°F3.9°CToo warm
Sun 9 PM47°F8°C51%38.8°F3.8°CToo warm
Sun 10 PM46°F8°C53%38.2°F3.4°CToo warm
Sun 11 PM45°F7°C53%37.3°F3.0°CToo warm
Mon 12 AM44°F7°C53%36.4°F2.5°CToo warm
Mon 1 AM44°F7°C51%36.2°F2.3°CToo warm
Mon 2 AM43°F6°C53%35.6°F2.0°CToo warm
Mon 3 AM43°F6°C53%35.6°F2.0°CToo warm
Mon 4 AM42°F6°C55%35.0°F1.6°CToo warm
Mon 5 AM42°F6°C55%35.0°F1.6°CToo warm
Mon 6 AM42°F6°C60%35.7°F2.0°CToo warm
Mon 7 AM41°F5°C67%35.7°F2.1°CToo warm
Mon 8 AM42°F6°C73%37.5°F3.1°CToo warm
Mon 9 AM44°F7°C70%38.9°F3.9°CToo warm
Mon 10 AM46°F8°C71%41.0°F5.0°CToo warm
Mon 11 AM48°F9°C68%42.3°F5.7°CToo warm
Mon 12 PM50°F10°C68%44.2°F6.8°CToo warm
Mon 1 PM51°F11°C68%45.1°F7.3°CToo warm
Mon 2 PM51°F11°C74%46.2°F7.9°CToo warm
Mon 3 PM52°F11°C71%46.6°F8.1°CToo warm
Mon 4 PM53°F12°C69%47.2°F8.4°CToo warm
Mon 5 PM50°F10°C80%46.3°F7.9°CToo warm
Mon 6 PM47°F8°C83%43.9°F6.6°CToo warm
Mon 7 PM44°F7°C86%41.5°F5.3°CToo warm
Mon 8 PM41°F5°C89%39.0°F3.9°CToo warm
Mon 9 PM40°F4°C85%37.4°F3.0°CToo warm
Mon 10 PM39°F4°C82%36.0°F2.2°CToo warm
Mon 11 PM38°F3°C79%34.6°F1.4°CToo warm
Tue 12 AM37°F3°C72%32.7°F0.4°CToo warm
Tue 1 AM36°F2°C69%31.4°F−0.4°CToo warm
Tue 2 AM35°F2°C66%30.1°F−1.1°CToo warm
Tue 3 AM35°F2°C61%29.5°F−1.4°CToo warm
Tue 4 AM34°F1°C61%28.6°F−1.9°CToo warm
Tue 5 AM33°F1°C58%27.4°F−2.6°CMarginal
Tue 6 AM33°F1°C58%27.4°F−2.6°CMarginal
Tue 7 AM32°F0°C63%27.0°F−2.8°CMarginal
Tue 8 AM32°F0°C66%27.3°F−2.6°CMarginal
Tue 9 AM33°F1°C61%27.7°F−2.4°CMarginal
Tue 10 AM34°F1°C61%28.6°F−1.9°CToo warm
Tue 11 AM35°F2°C56%28.9°F−1.7°CToo warm

Right now at the base

Clear
50°F10°C
Wind
3 mph6 km/h
Humidity
44%
Precipitation
0% chance

Nearest station KMVL at 12:30 PM: Clear, 55°F13°C, 38% humidity (44°F6°C wet-bulb), wind 0 mph0 km/h.

Snow forecast new snow at the base, NOAA forecast

Next 24 h
0″0 cm
Next 48 h
0″0 cm
Next 72 h
0″0 cm

No new snow in the forecast for the next 72 hours.

7-day outlook

  1. Today 56°F13°C 41°F5°C Sunny
  2. Mon 53°F12°C 32°F0°C Partly Sunny then Slight Chance Rain Showers
  3. Tue 38°F3°C 26°F−3°C Sunny
  4. Wed 44°F7°C 37°F3°C Sunny
  5. Thu 53°F12°C 44°F7°C Mostly Sunny then Chance Rain Showers
  6. Fri 50°F10°C 40°F4°C Slight Chance Rain Showers then Partly Sunny
  7. Sat 52°F11°C 44°F7°C Partly Sunny

Forecast for 12 PM · NOAA grid updated 2:11 AM

About this forecast

Bolton Valley is a ski resort in Vermont with a base at 1,570 ft and a summit at 3,150 ft, 1,580 ft of vertical. This page checks NOAA's hourly forecast at the base and the summit every time you load it and works out the wet-bulb temperature, which is what decides whether snow guns can run. Snowmakers can start below 28°F−2°C wet-bulb, and make good snow below 25°F−4°C.

Other ski resorts in Vermont

All ski resorts by state →

Base: NOAA's forecast for the base area (forecast grid elevation 2,277 ft). Summit: estimated from the base forecast with typical cooling by elevation; on calm, clear nights cold air can pool at the base instead.

Click a pin or anywhere on the map to check it.